Segments and Geographic Area Analysis - Long-Lived Tangible Assets by Country (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Net book value of assets	$ 1,156,368	$ 1,141,908	$ 1,175,895
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net book value of assets	543,930	362,813	559,288
Senegal [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net book value of assets	169,627	352,655	188,694
Spain [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net book value of assets			142,930
Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net book value of assets	98,793	91,089	106,173
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net book value of assets	251,049	256,837	98,338
Brazil [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net book value of assets	86,057	69,596	76,383
Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net book value of assets	6,912	8,918	4,089
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net book value of assets	$ 612,438	$ 779,095	$ 616,607